Chris Jans-- He would have alot of better offers than Iowa so it would be a long shot.
Darian DeVries-- Drake has now had 4 head coaches in 3 years (Giacoletti, Rutter, Medved, DeVries). They will want to keep him around for a little while. His brother played football at UI but like Jans if DeVries plays his cards right he can get better offers than Iowa. Can leverage his recruiting in the Big East while at Creighton. Also a long shot.
Jeff Horner-- Lots of valuable coaching and recruiting experience at the college and high school level. Connections are obvious. What isn't as obvious is whether being a head coach at a D2 school and moving right to the Big Ten is the best move. Also, would he want to come and work for his alma mater for Gary Barta? This would be a better possibility than Jans or DeVries but would be a reach for sure.
Dean Oliver-- Has been all over the Midwest as an Assistant and I think may have seen time in the NBA as an assistant. Again, obvious connections but is the idea of working for his Alma Mater enough to get him here instead of holding out for better offers? Oliver would be the safer hire than Horner in my opinion.
Ryan Bowen-- Reading up it seems like Bowen likes it in the NBA. When he left Iowa following Fran's first year he went to the NBA where he has been for the last 8 years. He likes it in Denver and has a good rapport with Mike Malone the head coach. The fact that he did not go to another college job after leaving Iowa might say something about his coaching aspirations. This would be a pretty good hire but I also think it is a long shot.